How to Reduce Amazon ACoS: 7 Proven Strategies for Profitable PPC Campaigns

If you want to reduce Amazon ACoS and turn your advertising spend into actual profit, you are not alone. The average ACoS across Amazon Sponsored Products sits around 30%, according to recent Amazon Ads benchmarks, yet many sellers run campaigns at 50% or higher without realizing how much margin they are bleeding. At Miraflores Marketing, we manage PPC campaigns for dozens of Amazon sellers, and the difference between a profitable campaign and a money pit almost always comes down to seven core optimizations.

ACoS, or Advertising Cost of Sales, is calculated by dividing your total ad spend by the revenue those ads generate, then multiplying by 100. A 25% ACoS means you spend $0.25 for every $1.00 in ad revenue. The lower the number, the more profitable your ads. But chasing the lowest possible ACoS is not always the right move, especially during product launches when visibility matters more than immediate returns.

“The sellers who consistently win on Amazon PPC are not the ones who spend the most. They are the ones who eliminate waste first and scale what works second.” — At Miraflores Marketing, this principle drives every campaign optimization we run for our clients.

What Is a Good ACoS on Amazon and How to Reduce Amazon ACoS Targets

Before you start slashing bids, you need to know what a realistic ACoS target looks like for your specific product and stage of growth. There is no universal “good” ACoS because it depends entirely on your profit margins, your product lifecycle stage, and your advertising goals.

Here is how we break it down for our clients at Miraflores Marketing:

  • Launch phase (months 1-3): Accept 40-60% ACoS. You are buying ranking velocity. Every sale pushes your organic position higher, which reduces long-term ad dependency.
  • Growth phase (months 3-9): Target 25-35% ACoS. Your organic sales should be increasing, and your TACoS (Total Advertising Cost of Sales) should be declining even if ACoS stays steady.
  • Profitability phase (month 9+): Aim for 15-25% ACoS. At this point, your organic rank carries most of the revenue and PPC should be defending your position, not building it.
  • Break-even ACoS: Calculate this by subtracting all non-ad costs (product cost, FBA fees, referral fees) from your selling price. If your product sells for $29.99 and total non-ad costs are $18.00, your break-even ACoS is roughly 40%. Anything below that is profit from advertising.

The mistake most sellers make is applying a profitability-phase target to a launch-phase product. That approach starves new listings of the visibility they need to gain traction. Our clients typically see their TACoS drop from 15-20% during launch to 8-12% within six to nine months by following this staged approach.

Strategy 1: Eliminate Wasted Ad Spend With Negative Keywords

The fastest way to reduce Amazon ACoS is to stop paying for clicks that never convert. Open your Campaign Manager, download the Search Term Report for the last 60 days, and sort by spend descending. Every search term with more than 15-20 clicks and zero orders is burning your budget.

Add those non-converting search terms as negative exact match keywords in the campaign where they appeared. At Miraflores Marketing, we run this negative keyword audit weekly for every client. One seller in the kitchen accessories category cut ACoS from 42% to 27% in three weeks just by adding 85 negative keywords across four campaigns.

Here is the process we recommend:

  • Step 1: Download the Search Term Report from Campaign Manager (Measurement and Reporting section).
  • Step 2: Filter for search terms with 15+ clicks and zero orders.
  • Step 3: Add each as a negative exact match keyword in the originating campaign.
  • Step 4: Also check terms with 1 order but very high ACoS (above 100%). Consider adding these as negatives too unless the product is in launch phase.
  • Step 5: Create a negative keyword master list and apply it across all campaigns using negative keyword targeting at the campaign or ad group level.

This single tactic typically reduces wasted spend by 20-30% within the first month. It is the highest-impact, lowest-effort optimization you can make.

Strategy 2: Separate Brand and Non-Brand Campaigns to Reduce Amazon ACoS

Mixing branded and non-branded keywords in the same campaign is one of the most common structural mistakes we see. Brand keywords typically convert at 3-5x the rate of generic terms, which means your blended ACoS masks the true performance of each keyword type.

Create dedicated brand campaigns targeting your brand name, product name, and common misspellings. Then run separate campaigns for category, competitor, and generic keywords. This separation gives you accurate ACoS visibility per campaign type and lets you set different bid strategies for each.

In our experience, brand campaigns run at 5-10% ACoS while non-brand campaigns run at 25-45% ACoS. When these are blended, your reported ACoS looks like 20-25% and you falsely believe non-brand campaigns are performing well. The moment you separate them, you see where money is actually being wasted and can reallocate budget toward the keywords driving profitable growth.

Strategy 3: Optimize Your Listing to Improve Conversion Rate

Your ACoS is a function of two things: cost per click and conversion rate. Most sellers obsess over bids while ignoring the listing behind the ad. If your listing converts at 8% instead of 15%, you are paying almost twice as much per sale regardless of your bid amount.

Focus on these listing elements that directly impact conversion and therefore ACoS:

  • Main image quality: Products with professional photography and infographic-style images see 20-30% higher click-through rates. Invest in high-resolution images with lifestyle shots and comparison charts.
  • Bullet points: Lead with the benefit, follow with the feature. Use all five bullets. Each should address a specific customer pain point or objection.
  • A+ Content: Brand-registered sellers should always use A+ Content. Amazon reports that A+ Content increases conversion rates by 3-10% on average.
  • Reviews and ratings: Listings with fewer than 15 reviews and below 4.0 stars will struggle to convert PPC traffic profitably. If your review count is low, consider the Amazon Vine program or the Request a Review button for every order.
  • Price competitiveness: Run a competitive price analysis weekly. PPC sends shoppers to your listing, but if your price is 15% above comparable products, they will click back and buy elsewhere.

At Miraflores Marketing, we always audit the listing before touching campaign settings. In one recent case, a supplement brand reduced ACoS from 38% to 22% without changing a single bid, simply by updating images and rewriting bullet points. The Amazon SEO and listing optimization service we offer includes a full conversion audit before any PPC adjustments.

Strategy 4: Use Bid Adjustments by Placement

Amazon lets you adjust bids by placement: top of search, product pages, and rest of search. These three placements perform very differently, and applying the same bid everywhere is leaving money on the table.

Top of search placements typically convert 2-3x higher than product page placements. That means a higher bid for top of search can actually lower your ACoS because the conversion rate more than compensates for the extra cost per click.

Here is what we typically recommend for established products:

  • Top of search: Increase bid adjustment by 25-50% if your conversion rate is strong (above 12%).
  • Product pages: Decrease bid adjustment by 10-25%. These placements often attract comparison shoppers who are less likely to convert on your listing.
  • Rest of search: Keep at default or decrease slightly. This is the lowest-converting placement for most categories.

Use the Placement Report in Campaign Manager to see actual ACoS by placement. Then adjust bids accordingly. One of our home goods clients saw ACoS drop from 31% to 19% by shifting 60% of budget toward top of search placements where their conversion rate was 18% versus 7% on product pages.

Strategies 5-7: Advanced Tactics to Reduce Amazon ACoS Further

Strategy 5: Dayparting. Analyze your sales data by hour. If conversions drop significantly between midnight and 6 AM, reduce bids during those hours. Tools like Perpetua, Pacvue, and Scale Insights offer automated dayparting. At Miraflores Marketing, we have seen dayparting reduce ACoS by 5-8% for sellers in competitive categories like supplements and electronics.

Strategy 6: Match type migration. Start new keywords in broad or phrase match to discover converting search terms, then graduate winners to exact match with higher bids. This funnel approach ensures you only invest heavily in keywords with proven conversion data. The average CPC for exact match keywords on Amazon is $0.91, but conversion rates are typically 30-50% higher than broad match, making the effective cost per acquisition lower.

Strategy 7: Focus on TACoS, not just ACoS. TACoS measures ad spend as a percentage of total revenue, including organic sales. A declining TACoS with stable ACoS means your advertising is generating organic ranking momentum. This is the healthiest trajectory for any Amazon business. Our clients target TACoS below 10% within 12 months of product launch, with a goal of reaching 6-8% on mature products.

For detailed guidance on setting up your first PPC campaigns, read our guide on choosing the right Amazon seller plan, since a Professional account is required to run Sponsored Products ads. You can also review Amazon’s official Sponsored Products documentation for platform-specific setup instructions.

Final Thoughts on How to Reduce Amazon ACoS

Reducing your Amazon ACoS is not about slashing bids across the board. That approach kills visibility and tanks your organic rank along with it. The sustainable path starts with eliminating wasted spend through negative keywords, separating brand from non-brand campaigns, and improving the listing that sits behind every ad click. From there, placement optimization, dayparting, and a TACoS-focused mindset compound into meaningful profit improvement over three to six months.

At Miraflores Marketing, we have helped sellers reduce ACoS by 30-50% while maintaining or increasing total sales volume. If your campaigns are burning budget without delivering returns, contact our team for a free PPC audit. We will analyze your Search Term Reports, campaign structure, and listing quality to build a custom optimization roadmap.

Frequently Asked Questions About Reducing Amazon ACoS

What is a good ACoS on Amazon?
A good ACoS depends on your margins and product stage. For established products, 15-25% is typically profitable. For launches, 30-50% is expected and strategic. Calculate your break-even ACoS by subtracting all non-ad costs from your selling price and dividing by the selling price.

How long does it take to reduce Amazon ACoS?
Most sellers see a 15-25% reduction in ACoS within 30-60 days of implementing negative keyword optimization and campaign restructuring. Listing improvements take an additional 2-4 weeks to fully impact conversion rates and therefore ACoS.

Should I lower my bids to reduce ACoS?
Lowering bids reduces spend but also reduces impressions and sales velocity. A better approach is to eliminate non-converting keywords first, then optimize placements and listing conversion rate. Only reduce bids as a last resort after all other optimizations are in place.

What is the difference between ACoS and TACoS?
ACoS measures ad spend divided by ad revenue only. TACoS measures ad spend divided by total revenue, including organic sales. TACoS is a more holistic metric because it shows whether your advertising is building organic momentum. A declining TACoS with stable ACoS means your strategy is working.